Detection of alkali-silica reaction swelling in concrete by staining
Patent
·
OSTI ID:645964
A method using concentrated aqueous solutions of sodium cobalt nitrite and rhodamine B is described which can be used to identify concrete that contains gels formed by the alkali-silica reaction (ASR). These solutions present little health or environmental risk, are readily applied, and rapidly discriminate between two chemically distinct gels; K-rich, Na-K-Ca-Si gels are identified by yellow staining, and alkali-poor, Ca-Si gels are identified by pink staining.
- Research Organization:
- University of California
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- Assignee:
- Univ. of California, Los Alamos, NM (United States)
- Patent Number(s):
- US 5,739,035/A/
- Application Number:
- PAN: 8-745,118
- OSTI ID:
- 645964
- Country of Publication:
- United States
- Language:
- English
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